Switch to Amazon Smile

In many (all?) locations, Amazon have an affiliated charity option which you access by buying from smile.amazon... instead of www.amazon... but often you will end up having the manually change the URL after following a link (the Firefox Amazon Assistant add-on often prompts to automatiucally switch, but again not always).

This New Diggler pattern switches www.amazon.co.uk for smile.amazon.co.uk (so amend for your region):

• Name
  Visit in Amazon Smile
• Expression
  ^https://www.amazon.co.uk
• Action
  https://smile.amazon.co.uk$p

I suggest unticking Use the action as the menu label.